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(No Model.)

R. A. SGHOENBERG.

'RESETTING DEVICE FOR ANNUNGIATORS. No. 468,697. Patented Feb. 9, 1892.

2 Figs WITNESSES.

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ATTORNEYS:

UNITED STATES PATENT @rrrcE.

RALPH A. SCHOENBERG, OF NENV YORK, N. Y.

RESETTING DEVICE FOR ANNUNCIATORS.

SPECIFICATION forming part of Letters Patent No. 468,697, dated February9, 1892. Application filed July 31, 1891. Sen'al No. 401.271. (N0model.)

To aZZ whom it may concern.-

Be it known that I, RALPH A. SoHoENBERe, of New York city, in the countyand State of New Yorlghave invented a new and Improved PneumaticAttachment for Electric Annunciators, of which the following is a fullclear, and exact description.

My invention relates to a pneumatic attachment for annnnciators, and hasfor its object to provide a means whereby the annunciator may bepneumatically reset without jarring or subjecting the annunciator to anyshock whatever and whereby, also, the annunciator may be placed upon anydesired support in any locality without interfering with its propermanipulation.

A further object of the invention is to so construct the attachment thatit may be operated from any room at any distance -from the annunciatoror close thereto, required.

Another object of the invention is to provide a means whereby beforeringing and cansing a drop'finger to disclose the number of the room orfloor the operator may be assured that every drop-finger is elevated andcon cealed from viewin front of the annunciatorwindow.

A further object of the invention is to provide an attachment that isexceedingly simple and economic and capable of expeditious andconvenient attachment to any annunciator.

The invention consists in the novel con' struction and combination ofthe several parts, as will be hereinafter fully set forth, and pointedout in the claims.

Reference is to be had to the accompanying drawings, forminga part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure l is a front elevation of the annunciator having the inventionapplied thereto. Fig. 2 is a transverse section taken centrally throughthe annunciator practically on the line 2 2 of Fig. 3, and Fig. 3 is avertical longitudinal section taken practically on the line 3 3 of Fig.2.

In the annunciator illustrated the front window 10 is provided with theusual opaque surface 11 and transparent openings 12, at which thedial-face 13 of the drop-fingers 14 is adapted to'appear. Upon the backboard of the casing of the annunciator the usual brackets 15 aresecured, carrying magnets 16, and upon said brackets the armatures 17are pivoted, and one member of each armature is provided with alatch-head 18, or the interior arrangement of the anuunciator may bematerially different from that shown and described. The drop-fingers 14:are illustrated as pivoted at the lower ends of the brackets, and theyare provided with openings 19, through which the latch-heads 18 of thearmatures extend when the fingers are carried upward to their normalposition, as shown in positive lines in the lower portion of Fig. 2 andin dotted lines at the upper portion thereof. The drop-fingers arearranged in horizontal rows, and below each upper row of drop-fingers ashaft 20 is located, having its ends fulcrumed in the easing of theannunciator, and below the lower row of drop-fingers another shaft21 isplaced. Both of the shafts 21 and 20 are preferably crank-shafts, andboth the shafts are connected at or near their central portion by a rodor bar 22, the said rod or bar being loosely secured to the shafts. Thelower end of the rod or bar extends downward a distance below the lowershaft 21, and integral with its lower end a disk 23 or the equivalentthereof is formed. This disk is adapted to normally rest upon a bellows24:, located at the bottom of the annunciator-case. A tube 25 connectswith the bellows and air is forced into the latter through the tubethrough the medium of a hand-bulb 26 or. the equivalent thereof. Themoment that the bulb 26 is compressed the bellows is inflated, the disk23, attached to the rod 22, is elevated by the bellows, and thecrank-arms of both shafts are carried upward, and if any of thedrop-fingers of the annunciator are in their lowermost or displayposition they will be carried upward to an engagement with theirarmatures. XVhen the drop-fingers are in their lower or displayposition, they rest upon the shaft immediately below the line towhich-they belong.

In the operation of the annunciator if a person in a room distant fromthe annunciator should desire to give notice through'the medium of the,annunciator it is very desirable that the operator should firstascertain whether or not any of the drop-fingers are in their lowermostor display position, as should any of them be in such position and theattendant not notice the fi nger dropped it would be difficult for saidattendant to determine from which room or fioor the last call was made.Heretofore this has been very difficult to determine, and, in fact, nodevice heretofore employed has proved at all accurate.

By the use of the simple attachment herein shown and described thisannoyance or objection is, however, overcome, as before touching thebutton to make the call all that the operator need do is to press thebulb where-- upon the shaft in' the annunciator will be actuated and anydrop-fingers that may be in their lowermost position will be thrownupward and concealed from view. As soon as this is accomplished thealarm can be given and the operatormayrestassured that unless 1. In anannunciator, the combinati0n,with the magnets and their armatures, ofdisplay d top-fingers adapted to be engaged by the said armatures whenraised, crank-shafts below the drop-fingers for operating them, abellows operating the crank-shafts, and an air-compressing deviceconnected with the bellows, substantially as described.

2. In an annunciator, the combination, with pivoted displaydrop-fingers, of a crank-shaft below each finger and engaging the same,a rod connected to the crank-shafts and provided atits lower end with adisk, a bellows below the disk of the rod, and an air-compressing deviceconnected with the bellows, substantially as described.

3.- In an annunciator, the combination, with the magnets and theirarmatures, each having a latch-head, of the pivoted'display dropfingeradapted to be engaged by the latchheads of the armatures, a crank-shaftbelow each finger, a rod connecting the crank-shafts and provided with adisk at its lower end, a bellows below the disk of the rod, and anaircompressing device connected with the bellows, substantially asherein shown and described.

RALPH A. SOHOENBERG.

Witnesses: V

J. FRED. ACKER, E. M. CLARK.

